Place of Origin:China Brand Name: KOYO, LYC, NSK, NTN, , THK, TIMKEN, ZWZ,HRBCertification: ISO9001, ISO14001Model Number: 2304/2304kPayment & ... /Pieces per DayLess friction self-aligning ball bearing 2304 2304kThe self-aligning ball bearing 2304 2304k(20*52*21mm) has two ... bearings generate less friction than any other type of rolling bearing, Which Enables them to run cooler even at high speeds ...